Diving mask



FIG. 1 is a front view of a diving mask showing my new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side elevation view thereof; and,

FIG. 6 is a right side elevation view thereof.

The broken lines are for the purposes of illustrating portions of the diving mask and form no part of the claimed design. 

CLAIM The ornamental design for a diving mask, as shown and described. 